LAC8 by Hoya
Preferred
Very Common
Environmentally Dangerous
Refractive Index vs Wavelength
Refractive Index Calculator
dn/dλ vs Wavelength
dn/dλ Calculator
Abbe Number Calculator
Transmission vs Wavelength
Transmission Calculator
Optical Properties
| Refractive Index (nd) | 1.713 |
|---|---|
| Abbe Number (Vd) | 53.94 |
| Dispersion Formula | Schott |
| Wavelength Range | 0.36501 — 1.5296 µm |
$$n(\lambda) = \sqrt{2.87785 - 0.0138329\,\lambda^2 + 0.0203012\,\lambda^{-2} + 0.000277599\,\lambda^{-4} + 5.90598 \times 10^{-6}\,\lambda^{-6} + 1.77476 \times 10^{-7}\,\lambda^{-8}}$$
Thermal Properties
| TCE -30/70°C (10-6/K) | 5.9 |
|---|---|
| TCE 100/300°C (10-6/K) | 7.2 |
| Thermal Conductivity (W/mK) | — |
| Heat Capacity (J/gK) | — |
$$\frac{dn}{dT} = \frac{n_0^2 - 1}{2\,n_0}\left[2.53 \times 10^{-6} + 2(1.08 \times 10^{-8})\,\Delta T + 3(-2.18 \times 10^{-11})\,\Delta T^2 + \frac{6.41 \times 10^{-7} + 2(5.78 \times 10^{-10})\,\Delta T}{\lambda - -4.69 \times 10^{-10}}\right]
\Delta T = T - T_0, \quad T_0 = 23\,°\text{C}$$
Physical Properties
| Density (g/cm³) | 3.81 |
|---|---|
| Relative Cost | — |
Mechanical Properties
| Young's Modulus (GPa) | — |
|---|---|
| Poisson's Ratio | — |
| Knoop Hardness (kgf/mm²) | — |
Chemical Resistance
| Climatic Resistance | 1 |
|---|---|
| Stain Resistance | 3 |
| Acid Resistance | 4 |
| Alkali Resistance | — |
| Phosphate Resistance | — |
Notes
Recommended glass type
Similar Glasses (Other Manufacturers)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| LAK8 | Sumita | 1.713 | 53.9 | |
| K-LaK8 | Sumita | 1.713 | 53.9 | |
| S-LAL8 | Ohara | 1.712995 | 53.867058 | |
| LAL8 | Ohara | 1.712995 | 53.845848 | |
| D13-54 | Corning | 1.713 | 53.843096 | |
| H-LAK7A | CDGM | 1.713 | 53.832974 | |
| LAK8 | Schott | 1.713003 | 53.831633 | |
| N-LAK8 | Schott | 1.713 | 53.83 | |
| LAL60 | Ohara | 1.725999 | 53.565698 | |
| S-LAL60 | Ohara | 1.725999 | 53.565698 |
Similar Glasses (Hoya)
| Glass | Manufacturer | nd | Vd | |
|---|---|---|---|---|
| M-LAC8 | Hoya | 1.713 | 53.94 | |
| MP-LAC8-30 | Hoya | 1.7133 | 53.95 | |
| TAC1 | Hoya | 1.725999 | 53.41758 | |
| M-TAC80 | Hoya | 1.72903 | 54.04 | |
| MP-TAC80-60 | Hoya | 1.72963 | 54.07 | |
| TAC8P | Hoya | 1.72916 | 54.54 | |
| TAC8 | Hoya | 1.72916 | 54.67 | |
| MP-LAC14-80 | Hoya | 1.6976 | 55.51 | |
| LAC14 | Hoya | 1.6968 | 55.46 | |
| M-LAC14 | Hoya | 1.6968 | 55.46 |